The bedside alarm clock is just one of many devices made obsolete by smartphones. But with their puny speakers it's not impossible to sleep through a phone's alarm. Unless you've got this questionable iBell Mini accessory that merges tried and tested old-fashioned alarm clock technology with new.

Instead of an electronic beep, or even your favorite song, it wakes you from your slumber with the ear-piercing sound of a metal hammer pounding away at a pair of metal bells. It's $38 and doesn't require any batteries, but that's because it leeches off your iPhone's power source. And since it's designed for the old dock connector, you'll want to factor in the cost of Apple's Lightning adapter too if you've upgraded to the iPhone 5. [Japan Trend Shop via 7Gadgets]